Tag Archives: Aurorasaurus

Recent Auroral Activity, Prediction Websites, And Chances Of The Next Few Days – Head’s Up!

Greetings fellow astrophiles (and those checking in from the syracuse.com page about auroral activity this week)!

For those not in the magnetic field line loop, Sunspot 2371 (which several of us saw in full glory at the Hazard Branch Library this past Saturday) let off a significant coronal mass ejection (CME for short) in our direction that made it to Earth two days ago. This has produced some gorgeous aurora for those not coated in cloud cover or light pollution (as was the case for Syracuse at its peak on Monday). CNYO’s David Wormuth has kept the board aware of potential observing the past two nights, while at least one member of ASRAS posted a picture from his own locale that shows just enough aurora with an 8 second exposure. When Glenn Coin from syracuse.com asked about potential activity yesterday, I “kept it local” by passing the image along (included in Glenn’s article “Northern lights could be visible this week in Upstate New York”).

The current auroral activity from SWPC/NOAA

We may be due for another glow-worthy event in the next day or two as a smaller storm passes by. We’re keeping track of predictions for early-early Thursday morning to see if activity will be worth waking up extra early for (or not sleeping at all). If you want to see/capture aurora:

Naked Eye:

* Look North!
* The higher (the elevation) the better
* Avoid having a big city to your North
* For the best view, wait until the Moon sets. That’s going to put you out to 2 or 3 a.m. right now, but not having its glow will improve auroral sights.

Camera – same as Naked Eye observing, but include the following:

* High ISO (+1600)
* Longer exposures (try the 5 second to 15 second range on most small cameras, then experiment with longer sessions with a good DSLR)
* Steady tripod – it is supposed to be clear enough in the next few nights, but wind will complicate your picture taking

Want to keep track for yourself?

www.gi.alaska.edu/AuroraForecast/NorthAmerica – The direct North America prediction page from the Geophysical Institute

www.swpc.noaa.gov/communities/space-weather-enthusiasts – The Space Weather Enthusiast dashboard from NOAA’s Space Weather Prediction Center (you didn’t even know we had one of those!)

solarham.net – Solar activity isn’t just for space scientists. The Sun is of great importance to HAM Radio operators. You can tell how serious they are by the very thorough presentation of data.

www.aurorasaurus.org – this is an awesome idea. It’s a perfect mix of twitter and google maps. If you see aurora, you make a quick post on the website to let others know it may be active in your area. If enough people report, I say trust the posts and make a drive. Why wait for predictions when you can keep track of real-time data?

We’ll be keeping track of events over the next few days. For those who want to see what caused the whole mess, I encourage you to come to Liverpool Public Library tonight for their How-To Festival, where we’ll have solar scopes (and solar glasses) available to get a good view of the very prominent sunspots currently on the surface. And if we go late enough, maybe even a sneak peak of Jupiter and Venus as their conjunction brings them especially close to one another on June 30th (which we plan to have a session for as well. Stay tuned!).

Definite Maybe, But It Depends – Aurora Alert For Central New York Friday Night, 12 September 2014

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We can only hope… from Astronomy Picture Of The Day

Greetings fellow astrophiles,

The news has been busier than usual with stellar phenomena the past 24 hours with the report of a solar flare heading right for us. These flares are full of solar plasma that hit our magnetosphere and excite molecules in our upper atmosphere, producing long bands of mostly greens and reds (sometimes blues, depending on the altitude) we know as aurora. Reports have also been coming in that aurora have been brighter and farther south than usual in the last 12 hours, meaning we *might* be in for a show tonight if the CNY skies are clear enough.

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Physics! the Sun-Earth connection, with a flare to boot. From universetoday.com.

All that said, while the fact that “aurora will occur” is reasonably easy to predict based on the known direction of a solar flare, the overall brightness, timing, and the final observable latitudes are not easy to predict (we’re talking meteorological accuracy here, folks).

1. Brightness – The beautiful pictures you often see of aurora are, like the high-quality deep space images from Hubble, not exactly what you’d see if you were there in person. The strong green and red colors in aurora images are often produced with longer-exposure photography using DSLR cameras. This means that, to see them best, you need to be away from lit locations where your eyes can adjust to dark surroundings to pick up that much more green and red. Those attempting to see aurora from Syracuse are more likely to confuse the bright parking lights from DestinyUSA and St. Joseph’s with aurora. Having all of the bright city lights to your South IS THE KEY – so consider driving as far North as you believe to be reasonable to improve your chances of seeing aurora.

2. Timing – There were reports of aurora in Arizona last night. Arizona. That’s quite a ways South! That, unfortunately, can mean bad news for CNY observing. Solar flares are not continuous streams of plasma from the Sun – you can think of them more like a fireball. That is, there’ll be a little bit of heat (aurora activity) when the front edge of the fireball interacts with our magnetosphere, then the aurora will really brighten when the core of the fireball (and the most plasma) interacts with our magnetosphere, then the fireball will taper off and the aurora will dim. The fact that aurora were visible in Arizona last night might mean that a strong piece of the front edge (hopefully not the core, but that remains to be seen) had just hit Earth, which might mean the greatest intensity might occur during our afternoon and early evening tonight – which means we won’t see any activity (because the Sun is filling our sky with scattered blue photons). It is tough to know if we’ll still be in the throes of high activity or not until we see it tonight.

3. Latitude – For the most part, aurora are localized to a band around 15 degrees away from Earth’s geomagnetic poles, placing the peak of this phenomena usually in the Arctic (and Antarctic, let’s not forget!) zone – which is why most of the really good aurora pictures you see reveal a considerable amount of snow and ice on the ground (also made possible by the long exposures of the DSLR cameras). When large flares hammer on Earth’s magnetosphere, this peak region can slide in the direction of the equator, making aurora visible to more of Canada and the US. At peak hammering, we can see aurora in CNY no problem. But, again, timing and location are everything in this case – if the timing is just right, you’re still likely better off driving North for better views.

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The predictions for tonight from accuweather.com (as for 11:30 p.m. Friday)

What To Check Tonight:

2014sept12_NorthAmerica_5Geophysical Institute, University of Alaska Fairbanks – When you google “aurora prediction,” this is the first site you get. That should tell you something about how much others trust it. Most of the images you might see in local news reports likely come from this website. To use this site, click on THIS LINK, then scroll down on your left-hand side to the “Select a Map” box, then click on the North America map. You’ll get an estimate of the likelihood of seeing aurora for our area, then more detail about timings and what it is that’s causing the specific aurora (Click HERE for tonight’s updates).

Aurorasaurus – A site that absolutely needs to be used by more people. This is a crowdsource’d aurora alert system, where you can see if others in your area are reporting aurora or YOU can report seeing aurora to coax someone else outside. The site will get more interesting for CNY as we approach evening, but I would give this site a good look tonight to see if anyone else in our area is having good luck to the North.

Syracuse.comGlenn Coin already gave us one update this morning and I suspect updates will follow as prime observing time approaches and we (scientists and citizens together) have more to say about what is or isn’t visible. So, keep track of your favorite local news sources – or be the news source and report to them if you end up seeing anything!